Means for operating hatch-covers aboard ship



Filed July 14, 1949 June 2, 1953 KUMMERMAN 7 2,640,454

MEANS FOR OPERATING HATCH-COVERS ABOARD SHIP 2 Sheets-Sheet 1 INVENTOR.

HEN/Pl KUMMER MAN A TTORNEYS June 2, 1953 KUMMERMAN 2,640,454

MEANS FOR OPERATING HATCH-COVERS ABOARD SHIP Filed July 14,. 1949 2Sheets-Sheet 2 INVEN TOR. HE NA! -KUMMEAMAN BY f A T TORIVEYS I8--I8'.The shaft [8 is extended by a screwrod 34 having a sliding disc 35threaded on it, the sliding disc 35 being provided with a projectingheel 38 slidably engaging a slot 31 in the frame to prevent rotation ofthe sliding disc 35. The disc 35 further has a finger 38 projectingtherefrom to actuate limiting contacts 39 and 40 at the opposite ends ofits travel. To avert the danger of injury to the device in case ofnon-operation of the limit contacts, there is provided in conjunctionwith the above-described assembly a safety device comprising two flanges4| and 42 loosely mounted on the shaft l8 and each connected throughsuitably calibrated spring means 43 with further flanges 45, 44 keyed onthe said shaft l8'-l8. The flanges 4i and 42 are formed with clutchteeth 46 and 41 adapted to mesh with mating teeth 48 and 43 provided onthe opposite faces of the sliding disc 35. Shaft I8 is located inflanges pertaining to the extension 58 of housing 3|]. Theabove-described device operates as follows:

At the end of a stroke the finger 38 engages the contact element 39 or40. Should the motor fail to stop, the teeth 48 of the sliding clutchdisc will engage say the teeth 41 of flange M. This flange will rotateand produce by means of fingers 4| and 45 the tensioning of spring 43.The overload created by this supplementary force produces the cutting ofthe safety fuses of the motor supply circuit.

It will be observed that the jack shank 22 is preferably only formedwith a screw thread over a very small vertical extent thereof adjacentits free end 63, while the bushing 21 is internally threaded throughoutits whole length. This makes it possible to insure that a perfectlytight seal is provided for the interior of the jack by means of apacking ring gasket 6| or rubber seal ring adapted to be compressed atthe end of the stroke of the jack, or both such means simultaneously.There is nothing to prevent the provision of a supply of oil within thesaid bushing, an outer casing or cover 62 being of course in that caseprovided.

As shown in Fig. 2 there is a single motor I! actuating through themedium of the safetydrive device 30 previously described, a shaft 8actuating the two jacks l2, 12. This shaft has each of its opposite endsoperatively projecting into a related one of the coaxial pair of jacksl2. Asa result of this arrangement, there is no necessity of providingan angular transmission of any sort to operate said jacks.

It will of course be understood that the invention is in noway limitedto the exemplary embodiments illustrated and described, but only asdefined by the scope of the ensuing claims.

What I claim is:

1. In a ship having a deck provided with a hatch surrounded by a coamingand with hatch covers, a control arrangement for the ships hatch coversof the type comprising mutually pivoted hatch sections at least one ofwhich is also pivoted to the latch coaming, said arrangement comprisingat least one hollow body pivotally mounted on the ships deck outside thehatch coaming and laterally thereof, and a movable member slidinglylocated in said body and pivotally and directly secured to the hatchsection which is pivoted to the coaming, this latter pivotal connectionbeing closely adjacent the pivotal connection between the correspondinghatch cover and the coaming, said body and member forming a jack andbeing adapted to cause the sliding of said member in said body and thelifting of the cover,

2. An arrangement as in claim 1, wherein the hatch covers consist of twopairs of hatch sections, the sections of each pair being pivotedtogether, said pairs being alined to provide proximal and end sections,two pivots oppositely situated with respect to the hatch opening for thepivotal mounting of one of the end sections of each pair on the coaming,the said jack means being located in the vicinity of each of said endsand actuating the said section which is pivoted to the adjacent part ofthe hatch coaming.

3. An arrangement as in claim 1, wherein the hatch covers consist of twopairs of hatch sections, the sections of each pair being pivotedtogether, said pairs being alined to provide proximal and end sections,two pivots oppositely situated with respect to the hatch opening for thepivotal mounting of one of the end sections of each pair on the coaming,the said jack means being located in the vicinity of each of said endsand actuating the said section which is pivoted to the adjacent part ofthe hatch coaming, and wherein two pairs of jacks are located oppositelywith respect to the hatch opening and actuate said adjacent pivotallymounted hatch sections.

v4. In a ship having a deck provided with a hatch surrounded by acoaming and with hatch covers, an arrangement for the control of ship'shatch covers of the type comprising pairs of mutually pivoted hatchsections at least one of each pairbeing pivoted to the hatch coaming, toprovide proximal and end sections, said arrangement including one endhatch section, a pivot on one side of the hatch coaming for pivotallysupporting said section, additional pivots on said end section only ashort distance away from said first pivot and parallel thereto, a pairof jacks situated outside the hatch opening, each of said jackscomprising a main hollow body pivotally mounted on the ships deck and amovable element sliding- -ly located in said body and pivotallyconnected to said additional pivots, a drive shaft abutting to saidjacks, a motor for the actuation of said shaft, gear means in said jackfor transforming the rotation of said drive shaft into the slidingmovement of said sliding member inside said hollow body, saiddrive'shaft extending outside said hatch and being parallel to saidpivots, and a drive transmission for the control of said jacks, saiddrive transmission including a bevel and worm gearing between said motorand said shafts.

5. In an arrangement as in claim 4, automatic movement arresting meansin said drive transmission including limit switches stopping said motorand actuated upon said jack reaching the end of its pivotal movement ineach direction.

6. In means for opening and closing a hatchway having a coamingincluding side and end walls and a hatch cover adapted to fit on saidcoaming, frame plates fixed to one corner portion of the coamingand-projecting in spaced parallel relation therefrom, an arm fixed tosaid hatch cover at one edge thereof and terminating centrallybetween'the plates, a pivot bolt passing through said plates and theterminal portion of said arm, alined bearings carried by said platesbetween said bolt and coaming, a jackframe provided with journalsresting in said bearings, a, nut member rotatably mounted in said .framewith its longitudinal axis perpendicular to the axis of said journals, ajack screw extending through said nut member and having its upper endpivoted to said arm, and means to rotate said nut member.

7. In means for opening and closing a hatchway having a coamingincluding side and end walls and a hatch cover adapted to fit on saidcoaming, frame plates fixed to one corner portion of the coaming andprojecting in spaced parallel relation therefrom, an arm fixedv to saidhatch cover at one edge thereof and terminating centrally between theplates, a pivot bolt passing through said plates and the terminalportion of said arm alined bearings carried by said plates between saidbolt and coaming, a jackframe provided with journals resting insaidbearings, a nut member rotatably mounted in said frame with itslongitudinal axis perpendicular to the axis of said journals, a jackscrew extending through said nut member and having its upper end pivotedto said arm, a shaft extending laterally through said frame, meshingmiter gears carried by said nut member and ing means for said shaft.

8. In means for opening and closing a hatchway having a coamingincluding side and end walls and a hatch cover adapted to fit on saidcoaming, frame plates fixed to one corner portion of the coaming andprojecting in spaced shaft, and drivparallel relation therefrom, an armfixed to said hatch cover at one edge thereof and terminating centrallybetween the plates, a pivot bolt passing through said plates and theterminal portion of said arm alined bearings carried by said platesbetween said bolt and coarning, a jackframe provided with journalsresting in said bearings, a nut member rotatably mounted in said framewith its longitudinal axis perpendicular to the axis of said journals, ajack screw extending through said nut member and having its upper endpivoted to said arm, a shaft extending laterally through said frame,meshing miter gears carried by said nut member and shaft, and drivingmeans for said shaft, and including a motor and a safety circuit devicecontrolling said motor.

HENRI KUMMERMAN. 7

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 681,624 Cowles Aug. 27, 1902 1,361,221 Bentley Dec. 7, 19201,795,786 Lovett Mar. 10, 1931 2,256,087 Hay Sept. 16, 1941 2,486,107Brump Oct. 25, 1949

